September 16, 2008 – 9:24 pm
by Dave Snyder
(Update: I had some inaccuracies and hard to understand parts of this pointed out by Edward Lewis of SEOConsultants.com, a person I trust and respect. Since I wrote this post to be a discussion starter and resource I thought it important to update.)
This is kind of a beginner to moderate post but I think it is something that confuses some marketers.
There is a difference between NoFollow and NoIndex.
NoFollow is an HTML attribute value used to instruct some search engines that a hyperlink should not influence the link target’s ranking in the search engine’s index.
NoIndex is an HTML meta tag that advises automated Internet bots to avoid indexing a Web page.
(Update: There is also a NoFollow meta tag, that works differently than the link level attribute)
When you disallow pages in your robots text file you are basically NoIndexing those files.
(Update: Halfdeck on Sphinn had a correction on this that was great: When you disallow pages you’re telling google not to crawl a page. It does not say “do not display this URL in the SERPs.” Noindex tells Google to crawl a page, pull links from the HTML and follow (unless nofollow is in META ROBOTS), but do not display the URL in the SERPs.)
This is a preview of
To NoFollow or To NoIndex That is the Question
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